Hydrogen peroxide induced formation of peroxystannate nanoparticles

Sladkevich, Sergey; Gutkin, Vitaly; Lev, Ovadia; Legurova, E. A.; Khabibulin, Dzhalil F.; Fedotov, M. A.; Uvarov, Vladimir; Tripol’skaya, T. A.; Prikhodchenko, Petr V.

doi:10.1007/s10971-008-1800-6

Cited by 38 publications

(54 citation statements)

References 50 publications

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“…Whereas we and others have shown several hydroperoxo and peroxo noncrystalline materials, 11,13 inorganic peroxosolvates are rare, and as far as we can tell, the only inorganic perhydrate gels are silica and alumina based hydrogels. Whereas we and others have shown several hydroperoxo and peroxo noncrystalline materials, 11,13 inorganic peroxosolvates are rare, and as far as we can tell, the only inorganic perhydrate gels are silica and alumina based hydrogels.…”

Section: Discussionmentioning

confidence: 60%

“…Na 2 O 2 ) lose their peroxide content even under very basic conditions (highly basic conditions are irrelevant since they decompose H 2 O 2 ), and the alkaline earth metal peroxides (e.g. 13 These complexes also lose their peroxide content quickly under near neutral solutions. Most transition metal elements activate hydrogen peroxide and induce dismutation (Fe, Mn, Co, Ni, V, etc.)…”

Section: Introductionmentioning

confidence: 99%

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Aqueous stability of alumina and silica perhydrate hydrogels: experiments and computations

et al. 2014

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Alumina and silica perhydrate hydrogels were synthesized. Raman spectroscopy and solid (27)Al MAS NMR confirmed alumina perhydrate formation. Thermal and aqueous stability of alumina and silica perhydrates was studied, and they showed exceptionally high stabilities. Alumina perhydrate retained some of the hydrogen peroxide even at 170 °C, higher than any other reported perhydrate, whereas the silica perhydrate lost its hydrogen peroxide content already at 90 °C. The silica perhydrate lost all its peroxide content upon immersion in water, whereas the alumina perhydrate was stable under near-neutral pH conditions. A computational study was conducted in order to glean molecular insight into the observed thermal and aqueous stability of alumina compared to silica perhydrate. Comparison of the hydrogen bond features and the stabilization energies of the hydrate and perhydrate of silica and alumina revealed a higher preference for hydrogen peroxide over water by alumina relative to silica. This is shown to be due to hydrogen peroxide being a better hydrogen donor than water and due to the superior hydrogen accepting propensity of alumina compared to silica.

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Section: Discussionmentioning

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Aqueous stability of alumina and silica perhydrate hydrogels: experiments and computations

et al. 2014

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“…It can be seen that a broad band appearing from 2500 to 3700 cm −1 could be attributed to O−H stretching mode from water and SnO−H groups, while the peak located at 1638 cm −1 may be ascribed to the contribution of δ(H−O−H) vibration. 42,43 A broad envelope at 1420 cm −1 and a shoulder at 858 cm −1 , which are assigned to δ(O−O−H) and ν(O−O) vibrations, respectively, could be observed, indicating the presence of peroxo ligands in the precursor. 43 The peaks at 516 and 714 cm −1 can be ascribed to vibrations of Sn−OH and Sn−O−Sn in the precursor, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…42,43 A broad envelope at 1420 cm −1 and a shoulder at 858 cm −1 , which are assigned to δ(O−O−H) and ν(O−O) vibrations, respectively, could be observed, indicating the presence of peroxo ligands in the precursor. 43 The peaks at 516 and 714 cm −1 can be ascribed to vibrations of Sn−OH and Sn−O−Sn in the precursor, respectively. 29,42 Besides, a weak and sharp band existing at 1387 cm −1 in the spectra resulting from ν(C−O) vibrations can be observed from the FT-IR spectra, suggesting that some carbonate impurities might be included in BS-120.…”

Section: Resultsmentioning

confidence: 99%

“…29,42 Besides, a weak and sharp band existing at 1387 cm −1 in the spectra resulting from ν(C−O) vibrations can be observed from the FT-IR spectra, suggesting that some carbonate impurities might be included in BS-120. 43 However, these impurity contents are relatively small, could not be detected in the XRD patterns, and therefore can be ignored in the following BaSnO 3 synthesis from the peroxo-precursor. The XRD pattern evolution of the BaSnO 3 obtained by calcination of the peroxo-precursor at different temperatures is also included in Figure 1a.…”

Section: Resultsmentioning

confidence: 99%

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A Facile Peroxo-Precursor Synthesis Method and Structure Evolution of Large Specific Surface Area Mesoporous BaSnO₃

et al. 2015

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In this paper, we propose a facile and efficient strategy for synthesizing mesoporous BaSnO3 with a surface area as large as 67 m(2)/g using a peroxo-precursor decomposition procedure. As far as we know, this is the largest surface area reported in literature for BaSnO3 materials and may have a potential to greatly promote the technological applications of this kind of functional material in the area of chemical sensors, NOx storage, and dye-sensitized solar cells. The structure evolution of the mesoporous BaSnO3 from the precursor was followed using a series of techniques. Infrared analysis indicates large amount of protons and peroxo ligands are contained in the peroxo-precursor. Although the crystal structure of the precursor appears cubic according to the analysis of X-ray diffraction data, Raman and Mössbauer spectroscopy results show that the Sn atom is offset from the center of [SnO6] octahedron. After calcination at different temperatures, the precursor gradually transforms into BaSnO3 by release of water and oxygen, and the distortion degree of [SnO6] octahedral decreases. However, a number of oxygen vacancies are generated in the calcined samples, which are further confirmed by the physical property measurement system, and they would lower the local symmetry to some content. The concentration of the oxygen vacancies reduces simultaneously as the calcination temperature increases, and their contributions to the total heat capacity of the sample are calculated based on theoretical analysis of heat capacity data in the temperature region below 10 K.

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Flexible All‐Solution‐Processed Organic Solar Cells with High‐Performance Nonfullerene Active Layers

et al. 2020

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All‐solution‐processed organic solar cells (from the bottom substrate to the top electrode) are highly desirable for low‐cost and ubiquitous applications. However, it is still challenging to fabricate efficient all‐solution‐processed organic solar cells with a high‐performance nonfullerene (NF) active layer. Issues of charge extraction and wetting are persistent at the interface between the nonfullerene active layer and the printable top electrode (PEDOT:PSS). In this work, efficient all‐solution‐processed NF organic solar cells (from the bottom substrate to the top electrode) are reported via the adoption of a layer of hydrogen molybdenum bronze (HXMoO3) between the active layer and the PEDOT:PSS. The dual functions of HXMoO3 include: 1) its deep Fermi level of −5.44 eV can effectively extract holes from the active layer; and 2) the wetting issues of the PEDOT:PSS on the hydrophobic surface of the NF active layer can be solved. Importantly, fine control of the HXMoO3 composition during the synthesis is critical in obtaining processing orthogonality between HXMoO3 and the PEDOT:PSS. Flexible all‐solution‐processed NF organic solar cells with power conversion efficiencies of 11.9% and 10.3% are obtained for solar cells with an area of 0.04 and 1 cm2, respectively.

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Hydrogen peroxide induced formation of peroxystannate nanoparticles

Cited by 38 publications

References 50 publications

Aqueous stability of alumina and silica perhydrate hydrogels: experiments and computations

Aqueous stability of alumina and silica perhydrate hydrogels: experiments and computations

A Facile Peroxo-Precursor Synthesis Method and Structure Evolution of Large Specific Surface Area Mesoporous BaSnO₃

Flexible All‐Solution‐Processed Organic Solar Cells with High‐Performance Nonfullerene Active Layers

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Hydrogen peroxide induced formation of peroxystannate nanoparticles

Cited by 38 publications

References 50 publications

Aqueous stability of alumina and silica perhydrate hydrogels: experiments and computations

Aqueous stability of alumina and silica perhydrate hydrogels: experiments and computations

A Facile Peroxo-Precursor Synthesis Method and Structure Evolution of Large Specific Surface Area Mesoporous BaSnO3

Flexible All‐Solution‐Processed Organic Solar Cells with High‐Performance Nonfullerene Active Layers

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A Facile Peroxo-Precursor Synthesis Method and Structure Evolution of Large Specific Surface Area Mesoporous BaSnO₃